// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/wasm/signature-map.h"

#include "src/signature.h"

namespace v8 {
namespace internal {
    namespace wasm {

        uint32_t SignatureMap::FindOrInsert(const FunctionSig& sig)
        {
            CHECK(!frozen_);
            auto pos = map_.find(sig);
            if (pos != map_.end())
                return pos->second;
            // Indexes are returned as int32_t, thus check against their limit.
            CHECK_GE(kMaxInt, map_.size());
            uint32_t index = static_cast<uint32_t>(map_.size());
            map_.insert(std::make_pair(sig, index));
            return index;
        }

        int32_t SignatureMap::Find(const FunctionSig& sig) const
        {
            auto pos = map_.find(sig);
            if (pos == map_.end())
                return -1;
            return static_cast<int32_t>(pos->second);
        }

    } // namespace wasm
} // namespace internal
} // namespace v8
